![Texas Instruments TMS320C6474 Manual Download Page 140](http://html.mh-extra.com/html/texas-instruments/tms320c6474/tms320c6474_manual_1097114140.webp)
1
0
1
0
CLKS
chip_clks
CPU/ ,
Where
= 8 to 32
n
n
Internal Clock Source
CPU/6
DEVCFG.CLKS0/1
CLKSRG
CLKSM
TMS320C6474
SPRS552F – OCTOBER 2008 – REVISED JULY 2010
www.ti.com
7.12 Multichannel Buffered Serial Port (McBSP)
The McBSP provides these functions:
•
Full-duplex communication
•
Double-buffered data registers, which allow a continuous data stream
•
Independent framing and clocking for receive and transmit
•
Direct interface to industry-standard codecs, analog interface chips (AICs), and other serially
connected analog-to-digital (A/D) and digital-to-analog (D/A) devices
•
External shift clock or an internal, programmable frequency shift clock for data transfer
•
SPI operation in master mode only
For more detailed information on the McBSP peripheral, see the TMS320C6474 DSP Multichannel
Buffered Serial Port (McBSP) Reference Guide (literature number
SPRUG17
).
7.12.1 McBSP Device-Specific Information
The CLKS signal for MCBSP0 and MCBSP1 can be sourced from an external pin or by PLL Controller 1.
For details, see
Section 7.8
. If the clock from the PLL Controller 1 is used, the clock is shared between the
two McBSPs.
Figure 7-27
shows the sample rate generator clock (CLKSRG) selection logical diagram.
A.
For more details, see SYSCLK11 description in
Section 7.8.1.1
.
Figure 7-27. Sample Rate Generator Clock (CLKSRG)
7.12.2 McBSP Peripheral Register Descriptions
The memory map of the McBSP 0 registers is shown in
Table 7-42
.
Table 7-42. McBSP 0 Registers
HEX ADDRESS
ACRONYM
REGISTER NAME
028C 0000
DRR0
McBSP0 Data Receive Register via Configuration Bus.
Note: The CPU and EDMA3 controller can only read this register; they can not
write to it.
3000 0000
DRR0
McBSP0 Data Receive Register via EDMA3 Bus
028C 0004
DXR0
McBSP0 Data Transmit Register via Configuration Bus
3000 0010
DXR0
McBSP0 Data Transmit register via EDMA bus
028C 0008
SPCR0
McBSP0 Serial Port Control Register
028C 000C
RCR0
McBSP0 Receive Control Register
028C 0010
XCR0
McBSP0 Transmit Control Register
028C 0014
SRGR0
McBSP0 Sample Rate Generator Register
028C 0018
MCR0
McBSP0 Multichannel Control Register
028C 001C
RCERE00
McBSP0 Enhanced Receive Channel Enable Register 0 Partition A/B
028C 0020
XCERE00
McBSP0 Enhanced Transmit Channel Enable Register 0 Partition A/B
028C 0024
PCR0
McBSP0 Pin Control Register
140
Peripheral Information and Electrical Specifications
Copyright © 2008–2010, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s) :
TMS320C6474
Summary of Contents for TMS320C6474
Page 209: ...PACKAGE OPTION ADDENDUM www ti com 25 Sep 2010 Addendum Page 2 ...
Page 210: ......
Page 211: ......
Page 212: ......